Device for detecting internal defects of welding seam of aluminum battery box

The utility model discloses a device for detecting internal defects of welding seams of an aluminum battery box, which relates to the technical field of electric vehicles and comprises support frames and an ultrasonic probe, and an intermittent driving structure for intermittently moving the aluminum battery box in the X-axis direction is connected between the support frames. The top of the supporting frame is connected with a positioning structure used for positioning the original position of the aluminum battery box, the top of the supporting frame is fixedly connected with an n-shaped supporting frame, the top of the side wall of the n-shaped supporting frame is connected with a transverse moving structure used for enabling an ultrasonic probe to move in the Y-axis direction, and the transverse moving structure is connected with a height adjusting structure used for enabling the ultrasonic probe to move in the Z-axis direction. The height adjusting structure is connected with a rotating structure used for